PART No. 9373384175-03
ARUV12TLAV
ARUV18TLAV
ARUV24TLAV
ARUV30TLAV
ARUV36TLAV
ARUV48TLAV
ARUV60TLAV
OPERATING MANUAL
INDOOR UNIT (Duct type)
Keep this manual for future reference
MODE D’EMPLOI
UNITÉ INTÉRIEURE (type conduit)
Conservez ce manuel pour pour toute référence ultérieure.
MANUAL DE FUNCIONAMIENTO
UNIDAD INTERIOR (Tipo conducto)
Conserve este manual para posibles consultas futuras.
EnglishFrançaisEspañol
En-1
OPERATING MANUAL
PART No. 9373384175-03
VRF system indoor unit (Duct type)
SAFETY PRECAUTIONS
● Before using the appliance, read these “PRECAUTIONS” thoroughly and
operate in the correct way.
● The instructions in this section all relate to safety; be sure to maintain
safe operating conditions.
● “WARNING” and “CAUTION” have the following meanings in these
instructions:
WARNING
This mark indicates procedures which, if improp-
erly performed, might lead to the death or serious
injury of the user.
CAUTION
This mark indicates procedures which, if improp-
erly performed, might possibly result in personal
harm to the user, or damage to property.
PRECAUTIONS ON USE
WARNING
● Do not keep exposing oneself to the direct wind of air conditioner for a
long time.
● Do not insert fi ngers or objects into the outlet port or intake grilles.
● Except for EMERGENCY, never turn off main as well as sub breaker of
the indoor units during operation. It will cause compressor failure as well
as water leakage. First, stop the indoor unit by operating the control unit,
converter or external input device and then cut the breaker. Make sure to
operate through the control unit, converter or external input device.
● If the power supply cord of this appliance is damaged, it should only be
replaced by the authorized service personal, since special purpose tools
and specifi ed cord are required.
● If any refrigerant happens to leak, extinguish any fl ames, ventilate the
room and get in touch with authorized service personnel.
CAUTION
● Do not place animals or plants in the direct path of the air fl ow.
● Do not direct airfl ow at fi replaces or heating apparatus.
● Do not block or cover the inlet port and outlet port.
● Do not climb on, or place objects on, the air conditioner.
● Do not set fl ower vases or water containers on top of air conditioners.
● Do not hang objects from the indoor unit.
● Do not place anything below the indoor unit that should not get wet.
● Always turn off the electrical breaker whenever cleaning the air condi-
tioner or the air fi lter.
● Do not pour water or cleaning solvent on the unit directly, or wash the unit
with them.
● Do not expose the air conditioner directly to water.
● Do not operate the air conditioner with wet hands.
● Check the condition of the installation stand for damage.
● Operate only with air fi lters installed.
● Do not drink the water drained from the air conditioner.
● Do not apply any heavy pressure to radiator fi ns.
● Do not use infl ammable gases near the air conditioner.
● Do not touch the piping during operation.
● Ensure that any electronic equipment is at least 40 in.(1 m) away from
either the indoor or outdoor units.
● This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience
and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the
appliance.
Note:
Switching the operating mode in the heat recovery system may require
some time to prepare for operation. Please note that this is not a fault.
PRECAUTIONS ON INSTALLATION
CAUTION
● Do not attempt to install this air conditioner by yourself.
● This unit contains no user-serviceable parts. Always consult authorized
service personnel for repairs.
● When moving, consult authorized service personnel for disconnection
and installation of the unit.
● The unit must be earthed (grounded).
● Make sure drain work is implemented properly for drainage.
● Avoid installing the air conditioner near a fi replace or other heating apparatus.
● When installing the indoor and outdoor units, take precautions to prevent
access by infants.
NAME OF PARTS
ARUV12/18/24/30/36/48/60TLAV
(3)
(1)
(2)
(1) Outlet port
(2) Intake port
(3) Filter panel
Control unit (optional)
Types of remote controllers:
● Wireless Remote Controller
(Be sure to use after connecting receiver unit.)
● Wired Remote Controller
● Simple Remote Controller
For operation method, please refer to the Operating Manual of each device.
Contents
SAFETY PRECAUTIONS ....................................................................... 1
NAME OF PARTS .................................................................................. 1
MANUAL AUTO OPERATION ............................................................... 2
OPERATING TIPS ................................................................................. 2
CLEANING AND CARE.......................................................................... 3
TROUBLESHOOTING ........................................................................... 3
SPECIFICATIONS .................................................................................. 4
En-2
MANUAL AUTO OPERATION
Use the MANUAL AUTO operation in the event the remote control unit is
lost or otherwise unavailable.
*Limited to only when receiver unit is connected.
CAUTION
Do not press the MANUAL AUTO button with wet hands or pointed objects,
otherwise an electric shock or malfunction may occur.
Starting Operation
Press the MANUAL AUTO button on the operating con-
trol panel.
The operation can be set in the following setting.
Operating mode AUTO:
When Auto mode cannot be selected, it will oper-
ate in the same mode as the other indoor unit in
the same system. (When other indoor unit in the
same system doesn’t operate, the air conditioner
will operate in cooling.)
Fan speed AUTO
Setting temperature 74°F (23 °C)
Stopping Operation
Press the MANUAL AUTO button on the operating con-
trol panel.
Emergency Heat
* It is available when this function is enabled. Please consult an authorized
service personnel as to whether this function is effective.
Set emergency heat
During heating operation, press the MANUAL AUTO but-
ton on the operating control panel.
Auxiliary heater will be primary heater, and the outdoor unit will stop.
The OPERATION Indicator Lamp (Green) blinks during emergency heating
operation.(3 seconds on, 1 second off.)
Cancel emergency heat
During emergency heating operation, press the MANU-
AL AUTO button on the operating control panel.
OPERATING TIPS
Operation and Performance
About priority state and standby state
● Multiple indoor units can be connected within the same system. Depend-
ing on the system, choice of operating mode are limited.
Cooling priority
state
When the other indoor units within the same system
operate in cooling or dry mode, heating can not be
selected at the same time.
Heating priority
state
When the other indoor units within the same system
operate in heating mode, cooling and dry mode can not
be selected at the same time.
Standby state The standby state activates when 2 or more indoor
units start up at the same time in different mode. Any
indoor unit other than priority mode will wait in standby
state until priority mode changes (operation starts as
soon as priority is switched).
At this time, the OPERATION indicator lamp (green)
lights up and the TIMER indicator lamp (orange) fl ash-
es. (limited to only when receiver unit is connected)
Low ambient cooling
● When the outdoor temperature drops, the outdoor unit’s fans may switch
to Low Speed, or one of the fans may stop intermittently.
Heating performance
● Heating mode operates on the heat-pump principle, absorbing heat from
outdoor air and transferring that heat indoors. As a result, the operating
performance is reduced as outdoor air temperature drops. If you feel that
insuffi cient heating performance is being produced, we recommend you
use this air conditioner in conjunction with another type of heating appli-
ance.
● Heating mode heat your entire room by recirculating air throughout the
room, with the result that some time may be required after fi rst starting
the air conditioner until the room is heated.
Microcomputer-controlled automatic defrosting
● When using the Heating mode under conditions of low outdoor air tem-
perature high humidity, frost may form on the outdoor unit, resulting in
reduced operating performance. In order to prevent this kind of reduced
performance, this unit is equipped with a Microcomputer-controlled auto-
matic defrosting function. If frost forms, the air conditioner will temporar-
ily stop, and the defrosting circuit will operate briefl y (for about 4 to 15
minutes).
During Automatic Defrosting operation, the OPERATION indicator lamp
(green) will fl ash (limited to only when receiver unit is connected).
Oil recovery operation
● Periodically, the oil recovery operation is performed in order to return
compressor oil to the outdoor unit.
During oil recovery operation, the OPERATION indicator lamp (green) will
fl ash (for about 10 minutes) (limited to only when receiver unit is con-
nected).
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Temperature and humidity range
● The temperature and humidity required for operating this product is as
shown in the following table.
Cooling/Dry Mode Heating Mode
Outdoor
temperature
Please refer to the specifi cation of outdoor units.
Indoor
temperature
About 64 to 90 °F DB
(18 to 32 °C DB)
About 50 to 86 °F DB
(10 to 30 °C DB)
Indoor humidity About 80% or less
● If the air conditioner is operated under higher temperature conditions than
those listed, the built-in protection circuit may operate to prevent internal
circuit damage. Also, during Cooling and Dry modes, if the unit is used
under conditions of lower temperature than those listed above, the heat-
exchanger may freeze, leading to water leakage and other damage.
● If the unit is used for long periods under high-humidity conditions, con-
densation may form on the surface of the indoor unit, and drip onto the
fl oor or other objects underneath.
● Do not use this unit for any purposes other than the Cooling, Heating,
Dehumidifying, and air-circulation of rooms in ordinary dwellings.
CLEANING AND CARE
CAUTION
● Before cleaning the unit, be sure to stop the unit and disconnect the
power supply.
● Do not stand on an unstable platform when cleaning.
● When removing and replacing the air fi lters, be sure not to touch the heat
exchanger, as personal injury may result.
● When used for extended periods, the indoor unit may accumulate dust
inside, reducing its performance. We recommend that the indoor unit be
inspected regularly, in addition to your own cleaning and care. For more
information, consult authorized service personnel.
● Do not clean the inside of the unit by yourself. To clean the inside, always
consult authorized service personnel.
● When cleaning the unit’s body, do not use water hotter than 104 °F (40
°C), harsh abrasive cleansers, or volatile agents like benzene or thinner.
● If dirt is allowed to accumulate on the air fi lter, air fl ow will be reduced,
lowering operating effi ciency and increasing noise.
During periods of normal use, the air fi lters should be cleaned regularly.
Air fi lter replacement
Remove the fi lter panel to replace old fi lter with a new fi lter.
Filter panel
Screws
Air fi lter
Model ARUV12/18/24 ARUV30/36 ARUV48/60
Filter size
(W x D x H)
in 16 x 22.25 x 1 20 x 22.25 x 1 22 x 22 x 1
mm 406 x 565 x 25 508 x 565 x 25 558 x 558 x 25
● If dirt is allowed to accumulate on the air fi lter, airfl ow will be reduced,
lowering operating effi ciency and increasing noise.
When not using for an extended period
Leave the breaker on for at least 12 hours before starting operation when it
is to be used again.
TROUBLESHOOTING
The following conditions are not breakdowns or opera-
tion failures.
Doesn’t operate immediately:
● If the unit is stopped and then immediately started again, the compressor
will not operate for about 3 minutes, in order to prevent fuse blowouts.
● Whenever the electrical breaker is turned off then on again, the protection
circuit will operate for about 3 minutes, preventing unit operation during
that period.
Airfl ow is weak or stops:
● When Heating operation is started, indoor unit’s fan may temporarily stop,
to allow internal parts to warm up.
● During Heating operation, if the room temperature rises above the
thermostat setting, the outdoor unit will stop, and the indoor unit’s fan will
stop. If you wish to warm the room further, set the thermostat for a higher
setting.
● During oil recovery operation, the airfl ow may stop for approximately 10
minutes. (See page 2.)
● During Heating operation, the unit will temporarily stop operation (be-
tween 4 and 15 minutes) as the Automatic Defrosting mode operates.
(See page 2.)
● The fan may operate at low speed during Dry operation or when the unit
is monitoring the room’s temperature.
● In the monitor AUTO operation, the fan will operate at low speed.
Flashing lamps:
(Limited to only when receiver unit is connected)
● The OPERATION indicator lamp (green) fl ashes:
An oil recovery operation is being performed. (See page 2.)
● The OPERATION indicator lamp (green) fl ashes:
An automatic defrosting operation is being performed. (See page 2.)
● The OPERATION indicator lamp (green) and TIMER indicator lamp
(orange) are fl ashing alternately:
It has recovered from a power outage.
● The OPERATION indicator lamp (green) and TIMER indicator lamp
(orange) are fl ashing simultaneously:
It is operating in trial operation mode. Ask a manager as there may be
maintenance being conducted.
● The OPERATION indicator lamp (green) lights up and the TIMER indica-
tor lamp (orange) fl ashes:
This is the standby state. (See page 2.)
Noise is heard:
● In the following conditions there are sounds of water fl owing from the
indoor unit and the operation sound becomes loud. These are the sounds
of the fl owing of refrigerant.
When operation starts
When oil recovery operation fi nishes
When automatic defrosting operation fi nishes
● During operation, a slight squeaking sound may be heard. This is the
result of minute expansion and contraction of the panel due to tempera-
ture changes.
● During Heating operation, a sizzling sound may be heard occasionally.
This sound is produced by the Automatic Defrosting operation. (See page
2.)
Smells:
● Some smell may be emitted from the indoor unit. This smell is the result
of room smells (furniture, tobacco, etc.) which have been taken into the
air conditioner.
En-4
Fog comes out of the indoor unit:
● During Cooling operation, a thin mist may be seen emitted from the
indoor unit. This results from the sudden Cooling of room air by the air
emitted from the air conditioner, resulting in condensation and misting.
Steam comes out of the indoor unit:
● During Heating operation, the outdoor unit’s fan may stop, and steam
may be seen rising from the unit. This is due to the Automatic Defrosting
operation. (See page 2.)
Water is produced from the outdoor unit:
● During Heating operation, water may be produced from the outdoor unit
due to the Automatic Defrosting operation.
The following conditions may not be breakdowns so
check again.
Doesn’t operate at all:
● Has there been a power failure?
● Has a fuse blown out, or a circuit breaker been tripped?
● Is the main power switch set to the OFF position?
● Are you trying to engage in an operation different from the priority state?
(See page 2.)
● Is it in standby state? (See page 2.)
The operation mode cannot be changed:
● Are you trying to change to an operation different from the priority condi-
tions? (See page 2.)
Poor Cooling (or Heating) performance:
● Did you adjust the room temperature settings (thermostat) correctly?
● Is the air fi lter dirty? (See page 3.)
● Are the air conditioner’s inlet port or outlet port blocked?
● Is there a window or door open?
● In the case of Cooling operation, is a window allowing bright sunlight to
enter? (Close the curtains.)
● In the case of Cooling operation, are there heating apparatus and com-
puters inside the room, or are there too many people in the room?
● Is the fan speed set to low?
Set the temperature lower than the room temperature and use it:
● Temperature does not fall down well. Temperature may not fall down
depending on the room conditions. (While high humidity or the room
temperature is high.) (See page 3.)
In the following situations stop operation immediately
and get in touch with authorized service personnel.
● The problem cannot be solved even when the troubleshooting checks
have been performed.
● The FILTER indicator lamp (red) is fl ashing very fast (when receiver unit
is connected).
● The wired remote controller or simple remote controller indicate Er (when
connected).
● It has burning smell.
● For details on marking the Flashing lamps, please refer to the Manual of
“IR Receiver Unit” or “Wired Remote Controller”.
SPECIFICATIONS
MODEL
ARUV12
TLAV
ARUV18
TLAV
ARUV24
TLAV
POWER SOURCE 208/230 V ~ 60 Hz
AVAILABLE
VOLTAGE RANGE
187 to 253 V
COOLING
CAPACITY
Btu/h
(kW)
12,000
(3.5)
18,000
(5.3)
24,000
(7.0)
HEATING
CAPACITY
Btu/h
(kW)
13,500
(4.0)
20,000
(5.9)
27,000
(7.9)
DIMENSIONS & WEIGHT
HEIGHT
in
(mm)
51.0
(1295)
WIDTH
in
(mm)
17.7
(450)
DEPTH
in
(mm)
23.8
(605)
WEIGHT
lbs
(kg)
139
(63)
148
(67)
151
(69)
MODEL
ARUV30
TLAV
ARUV36
TLAV
ARUV48
TLAV
ARUV60
TLAV
POWER SOURCE 208/230 V ~ 60 Hz
AVAILABLE
VOLTAGE RANGE
187 to 253 V
COOLING
CAPACITY
Btu/h
(kW)
30,000
(8.8)
36,000
(10.6)
48,000
(14.1)
60,000
(17.6)
HEATING
CAPACITY
Btu/h
(kW)
34,000
(10.0)
40,000
(11.7)
54,000
(15.8)
67,000
(19.6)
DIMENSIONS & WEIGHT
HEIGHT
in
(mm)
51.0
(1295)
57.5
(1461)
WIDTH
in
(mm)
22.2
(564)
25.1
(638)
DEPTH
in
(mm)
23.8
(605)
23.8
(605)
WEIGHT
lbs
(kg)
174
(79)
179
(81)
212
(96)
223
(101)
● Standard static pressure : 0.5 in WG (125 Pa)
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